汗ばむ

Weather change: one day it's cool, breezy autumn weather, the next it's hot and sweaty summer weather again. This autumn's weather is proving unpredictable, and the extract below sums it up well:

秋雨の冷たさにコートを着たかと思うと、翌日は汗ばむ陽気で半袖に戻る。この時期の天候は何とも読みがたい。